How can you go against the forces of Society ?

Lots of discussion happens here and there in my society, such as today when out of nowhere a group of teachers started talking about shia' and how non-Muslims they are and things they do, things they have not witnessed themselves but hear other talk about like -the usual- Sheiks. At first i ignored the whole stupid thing and kept telling my colleague to finish grading the exams and tell a joke here or there but didn't talk about or defend anyone. I wanted to yell at them to have a mind of their own, to think and to stop the hatred but i didn't , i just sat there silently.

After, two hours when we finshed grading , my collegue and her friends started the topic again but this time cursing two of our other Shia' collegues, so i simply said don't do that, they have done nothing to you when one of them started by saying that they are the enemy of the prophet and blah blah blah, and the only thing i could say was that i have not heard them saying anything about Islam which lead them to another laugh and scorning labeling me the uneducated because it's everywhere, everywhere and everyone talking about how the Shia are the enemy of Islam !!. so i just stopped and move on to another topic. I hated the whole situation but saying the opposite to what everyone believe was scary to me and this is not the first time, i didn't wanted to be labled anything and i know that by going against what everyone believe ,which is a lot, is going to lable you.

So what do we do when the forces of society are very strong ? how can you go against them? how do you say what you beleive in without being outcast ?.

I have always been on the outcast side for a huge part of my life so in a way i don't care what other thinks of me or my opinions and i was being called non-muslim so many time, so i guess i grow some thick skin. But on the other hand being the outcast makes me wanna be loved and understood so i got to agree with what others believe cuz people like those who agree with them , those who doesn't argue all the time, those who don't bring strange idea like accpeting into a soceity which is very good at shidding the other, right? .

And i was thinking the whole day of what can i do to stop this? how can i be myself who i know is almost 90% against the common idea of my society ? how can i be loved and accepted with my different ideas ? how can i not be a hypocrite ? .

A double-faced society makes me 100% sure that there are lots and lots like me hiding and afraid to be the outcast. Is it the time to reveal the masks and face whatever happened even being an outcast again no matter how painful that is ?. Seems so cuz i hated myself today and i am willing to lose the world but not myself.